{"resultsPerPage":1,"startIndex":0,"totalResults":1,"format":"NVD_CVE","version":"2.0","timestamp":"2026-07-01T16:33:14.100","vulnerabilities":[{"cve":{"id":"CVE-2021-3603","sourceIdentifier":"security@huntr.dev","published":"2021-06-17T12:15:08.150","lastModified":"2026-06-17T04:05:25.257","vulnStatus":"Modified","cveTags":[],"descriptions":[{"lang":"en","value":"PHPMailer 6.4.1 and earlier contain a vulnerability that can result in untrusted code being called (if such code is injected into the host project's scope by other means). If the $patternselect parameter to validateAddress() is set to 'php' (the default, defined by PHPMailer::$validator), and the global namespace contains a function called php, it will be called in preference to the built-in validator of the same name. Mitigated in PHPMailer 6.5.0 by denying the use of simple strings as validator function names."},{"lang":"es","value":"PHPMailer versión 6.4.1 y anteriores contienen una vulnerabilidad que puede resultar en la llamada de código no confiable (si dicho código es inyectado en el ámbito del proyecto anfitrión por otros medios). Si el parámetro $patternselect de la función validateAddress() es ajustada como \"php\" (el valor predeterminado, definido por PHPMailer::$validator), y el namespace global contiene una función llamada php, ésta será llamada con preferencia al validador incorporado del mismo nombre. Mitigado en PHPMailer versión 6.5.0 negando el uso de cadenas simples como nombres de funciones de validador"}],"affected":[{"source":"security@huntr.dev","affectedData":[{"vendor":"PHPMailer","product":"PHPMailer","versions":[{"version":"unspecified","lessThan":"6.5.0","versionType":"custom","status":"affected"}]}]}],"metrics":{"cvssMetricV31":[{"source":"security@huntr.dev","type":"Secondary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H","baseScore":8.1,"baseSeverity":"HIGH","attackVector":"NETWORK","attackComplexity":"HIGH","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"HIGH","availabilityImpact":"HIGH"},"exploitabilityScore":2.2,"impactScore":5.9},{"source":"nvd@nist.gov","type":"Primary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H","baseScore":8.1,"baseSeverity":"HIGH","attackVector":"NETWORK","attackComplexity":"HIGH","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"HIGH","availabilityImpact":"HIGH"},"exploitabilityScore":2.2,"impactScore":5.9}],"cvssMetricV2":[{"source":"nvd@nist.gov","type":"Primary","cvssData":{"version":"2.0","vectorString":"AV:N/AC:M/Au:N/C:P/I:P/A:P","baseScore":6.8,"accessVector":"NETWORK","accessComplexity":"MEDIUM","authentication":"NONE","confidentialityImpact":"PARTIAL","integrityImpact":"PARTIAL","availabilityImpact":"PARTIAL"},"baseSeverity":"MEDIUM","exploitabilityScore":8.6,"impactScore":6.4,"acInsufInfo":false,"obtainAllPrivilege":false,"obtainUserPrivilege":false,"obtainOtherPrivilege":false,"userInteractionRequired":false}]},"weaknesses":[{"source":"security@huntr.dev","type":"Secondary","description":[{"lang":"en","value":"CWE-829"}]},{"source":"nvd@nist.gov","type":"Primary","description":[{"lang":"en","value":"CWE-829"}]}],"configurations":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:a:phpmailer_project:phpmailer:*:*:*:*:*:*:*:*","versionEndIncluding":"6.4.1","matchCriteriaId":"437831BD-D01F-42E9-A248-2AFEE67FB017"}]}]},{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:*","matchCriteriaId":"E460AA51-FCDA-46B9-AE97-E6676AA5E194"},{"vulnerable":true,"criteria":"cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:*","matchCriteriaId":"A930E247-0B43-43CB-98FF-6CE7B8189835"}]}]}],"references":[{"url":"https://github.com/PHPMailer/PHPMailer/commit/45f3c18dc6a2de1cb1bf49b9b249a9ee36a5f7f3","source":"security@huntr.dev","tags":["Patch","Third Party Advisory"]},{"url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/3YRMWGA4VTMXFB22KICMB7YMFZNFV3EJ/","source":"security@huntr.dev"},{"url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/FJYSOFCUBS67J3TKR74SD3C454N7VTYM/","source":"security@huntr.dev"},{"url":"https://www.huntr.dev/bounties/1-PHPMailer/PHPMailer/","source":"security@huntr.dev","tags":["Product"]},{"url":"https://github.com/PHPMailer/PHPMailer/commit/45f3c18dc6a2de1cb1bf49b9b249a9ee36a5f7f3","source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Patch","Third Party Advisory"]},{"url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/3YRMWGA4VTMXFB22KICMB7YMFZNFV3EJ/","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/FJYSOFCUBS67J3TKR74SD3C454N7VTYM/","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://www.huntr.dev/bounties/1-PHPMailer/PHPMailer/","source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Product"]}]}}]}